Cartridge lifting device for repeating and automatic firearms



G. REVELLI 2,308,799

CARTRIDGE LIFTING DEVICE FOR REPEATING AND AUTOMATIC FIRE-ARMS Jan. IE' 1943;

Filed April 25, 1938 Fiei.

Patented Jan. 19, 1943 GABTRIDGE LIFTING DEVICE FOR REPEAT- ING AND AUTOMATIC FEREARMS Gino Revelli, Milan, Italy; vested in the Alien Property Custodian Application April 25, 1938, Serial No. 204,187 In Italy May 5, 1937 1 Claim.

The regular and uniform feeding of cartridges is essential for the reliable operation of repeating and automatic fire arms. The feeding devices which have been used heretofore, frequently cause fouling of the fire arm because they do not feed the cartridges to the barrel at the proper time nor in the proper position. These faults hinder and often stop the movement of the breech block and cause the fire arm to become useless.

This invention relates to a lifting device for cartridges which ensures in a positive manner the exact positioning of the cartridge at the right time, so as to eliminate entirely the failures of feeding and their dangerous consequences.

The annexed drawing shows by way of example the application of the device to a repeating and/or automatic gun.

Fig. 1 shows a longitudinal section of the reservoir of the gun entirely filled with cartridges.

Fig. 2 shows the same with the last cartridge just before it is pushed into the barrel by the breech block.

The lifting device consists substantially of a lifting plate I having an inverted U shaped cross section, two levers or articulated rods 2 and 3, the upper one being S-shaped and the lower one being L-shaped and a spring 4.

The two levers are pivoted to the reservoir 1 at one of their ends at 5 and 6, respectively while the other ends are pivoted at 8 and 9 to the lifting plate I thus forming a parallelogram arrangement. One of the levers or articulated rods has an extension which forms the lever arm of the system. In the annexed drawing said lever is the S-shaped lever 2 and constitutes a driving lever, while the L- shaped lever 3 acts as a stabilizer; but the functions of said two levers could also be reversed. Under the action of the spring 4 the lever 2 tends to lift the lifting plate I. The lever 3 keeps the plate in a horizontal position. The two levers or articulated rods 2 and 3, which in the example shown, are bent only for adapting them to the illustrated form, may be of any other desired shape and also straight.

The cartridge I0 is thus maintained in the correct position during the step of introduction into the barrel l I and it maintains the proper direction without any possibility of altering its position. Thus the desired purpose is obtained i. e. all of the cartridges in the reservoir will be positively placed in the position required for the uniform and regular operation of the gun.

The device described :and shown also has the advantage of not being large and cumbersome so that the reservoir has a greater capacity.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is:

A cartridge feeding mechanism for repeating and automatic fire arms including a vertically disposed magazine adapted to receive a single vertical row of cartridges, a lifting plate of inverted U-shaped cross section disposed beneath the cartridges in the magazine and positively guided therein, an S-shaped crank lever having an extension thereon pivoted at one end to the lifting plate and at the other end to the body of the fire arm, an L-shaped lever also pivoted at one end to the lifting plate and at the other end to the body of the fire arm, said L-shaped lever being vertically disposed beneath said S-shaped lever and having its pivot points below and rearward of the corresponding pivot points of the S-shaped lever, a spring positioned between the extension of the S-shaped lever and the body of the fire arm, said spring bearing against the extension of the S-shaped lever at a point forward of its pivot point and acting to rotate said S- shaped lever and raise the lifting plate, said L- shaped lever serving to maintain the lifting plate in parallel relation with the barrel of the fire arm.

GINO REVELLI. 

